题目内容

脱式计算
580-80×5(129+78)×9(800-187)×535×6×9268+36×4.
(1)580-80×5,
=580-400,
=180;

(2)(129+78)×9,
=207×9,
=1863;

(3)(800-187)×5,
=613×5,
=3065;

(4)35×6×9,
=210×9,
=1890;

(5)268+36×4,
=268+144,
=412.
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